US4401377A - Motor-driven film transporting device in a single lens reflex camera including means for selectively driving film in a wind-up mode and a rewind mode - Google Patents
Motor-driven film transporting device in a single lens reflex camera including means for selectively driving film in a wind-up mode and a rewind mode Download PDFInfo
- Publication number
- US4401377A US4401377A US06/322,574 US32257481A US4401377A US 4401377 A US4401377 A US 4401377A US 32257481 A US32257481 A US 32257481A US 4401377 A US4401377 A US 4401377A
- Authority
- US
- United States
- Prior art keywords
- spool
- film
- light beam
- mirror
- mirror box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/42—Interlocking between shutter operation and advance of film or change of plate or cut-film
- G03B17/425—Interlocking between shutter operation and advance of film or change of plate or cut-film motor drive cameras
Definitions
- This invention relates to a single lens reflex camera using a roll film, and more particularly to a single lens reflex camera which is capable of effecting wind-up and rewind drive by a motor.
- a mirror box in which is contained a movable reflecting mirror reflecting a phototaking light beam toward the finder and retracted during photography is provided between the photo-taking lens and the imaging plane.
- a roll film supply chamber and a roll film take-up chamber are disposed on the opposite sides of the mirror box, and the film is transported from one of the chambers to the other via the imaging plane.
- a camera in which, on that side on which the take-up chamber is disposed with respect to the mirror box, there are disposed a wind-up mechanism connected to a spool for winding up the supplied film and a drive mechanism operable by an electric motor to drive the wind-up mechanism and on that side on which the supply chamber is disposed, there is disposed a rewind mechanism connected to the spool of a film magazine.
- a wind-up mechanism connected to a spool for winding up the supplied film
- a drive mechanism operable by an electric motor to drive the wind-up mechanism and on that side on which the supply chamber is disposed
- a rewind mechanism connected to the spool of a film magazine.
- the camera according to the present invention includes a film transporting device connecting the drive mechanism positioned on one side of the mirror box to the rewind mechanism positioned on the other side of the mirror box by belt means passed substantially in parallelism to the direction of transport of the film near the pivot of the movable mirror outside the mirror box.
- FIG. 1 is a rear view schematically showing the arrangement of the interior mechanisms of a single lens reflex camera according to an embodiment of the present invention.
- FIG. 2 is a plan view of the camera of FIG. 1.
- FIG. 3 is a longitudinal cross-sectional view of a part of the camera of FIG. 1.
- a wind-up mechanism 2 and a driving mechanism 3 for operating the wind-up mechanism 2 with a motor 4 as the drive source are disposed on the right side of a mirror box 1 with a partition plate 5 interposed therebetween.
- a rewind mechanism 6 is disposed on the left side of the mirror box 1 with a partition plate 5 interposed therebetween.
- a film take-up chamber 7 is disposed in proximity to the wind-up mechanism 2, and a film supply chamber 8 for containing a film magazine therein is disposed in proximity to the rewind mechanism 6.
- a diaphragm driving mechanism 9 is disposed between the mirror box 1 and the supply chamber 8.
- a mirror driving mechanism 11 for operating a reflecting mirror 10 and a shutter driving mechanism 12 are disposed between the mirror box 1 and the motor 4.
- a battery containing space 13 is provided at the bottom of the camera.
- a shutter-mirror charge mechanism 14 is disposed between the mirror driving mechanism 11 and the shutter driving mechanism 12 and the battery containing space 13.
- a focusing screen 15, a pentaprism 16 and an eyepiece 17 together constitute a well-known finder optical system.
- the driving mechanism 3 and the rewind mechanism 6 are connected together by a belt, (or "rotating transmitting member") 100 disposed near the pentaprism 16.
- a belt, (or "rotating transmitting member" 100 disposed near the pentaprism 16.
- the driving mechanism 3 has a gear 31 directly connected to the shaft of the motor 4, reduction gears 32, 33, 34 and 35 connected to the gear 31, an idle gear 36 in mesh with the gear 35, and a shaft gear 37 of a pulley 38 in mesh with the gear 36.
- the motor 4 revolves in normal direction during wind-up and revolves in reverse direction during rewind.
- a clutch is disposed around the shaft gear 37 and by this clutch, rotation of the shaft gear 37 may be transmitted to the wind-up mechanism during normal revolution of the motor and rotation of the shaft gear 37 may be transmitted to the rewind mechanism during reverse revolution of the motor.
- the rewind mechanism does not operate during normal revolution of the motor and the wind-up mechanism does not operate during reverse revolution of the motor.
- a rewind side pulley 62 is integrally provided on a rewind shaft 61 coupled to the spool of the film magazine contained in the film supply chamber.
- a belt 100 is extended between the wind-up side pulley 38 and the rewind side pulley 62 with rollers 101, 102 and 103 interposed therebetween. The rollers 101, 102 and 103 serve to control the direction and position of the belt 100.
- the belt 100 passes through the space outside the optical path between the eyepiece 17 and the pentaprism 16.
- the motor 4 is caused to start reverse revolution by a rewind operation start signal.
- This revolution (in the direction of arrow) is transmitted to the pulley shaft gear 37 via the gear train 31-36.
- the pulley 38 is rotated with the shaft gear 37 by the connecting operation between the clutch around the shaft gear 37 and the pulley 38.
- the rotation of this pulley 38 is transmitted to the pulley 62 through the belt 100 to cause rotation of the rewind shaft 61.
- the rewind shaft 61 causes a rewind coupling (not shown) projected into the supply chamber 8 to rotate the spool of the film magazine, whereby film rewind is effected.
- the reverse rotation of the shaft gear 37 by the normal revolution of the motor 4 during wind-up is not transmitted to the pulley 38 by the clutch.
- the rotation of the shaft gear 37 is transmitted to the wind-up mechanism 2.
- the take-up spool (not shown) in the film take-up chamber 7, a sprocket, not shown, etc. are driven, whereby film wind-up is effected.
- the wind-up mechanism 2 charges the shutter and mirror simultaneously with the film wind-up.
- a screen 15 is supported by a support frame 115
- the pentaprism 16 is supported by a support frame 116
- the eyepiece 17 is supported by a barrel 117.
- a movable reflecting mirror 10 is secured to a support member 10a pivotable about the shaft 1a of the mirror box 1.
- a clearance surrounded by the support frames 115, 116, 117 and the mirror box 1 is formed under the optical patch leading from the pentaprism 16 to the eyepiece 17, and the belt 100 is disposed in this clearance.
- the motor which is the drive source is contained within the camera.
- the present invention is also applicable to a camera in which a motor is provided within a motor drive device mountable to the camera and the driving mechanism in the camera is operated by this motor.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Cameras Including Film Mechanisms (AREA)
- Cameras In General (AREA)
Abstract
Description
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55167258A JPS5790620A (en) | 1980-11-27 | 1980-11-27 | Motor-driven rewinding device of single-lens reflex camera |
JP55/167258 | 1980-11-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
US4401377A true US4401377A (en) | 1983-08-30 |
Family
ID=15846393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/322,574 Expired - Lifetime US4401377A (en) | 1980-11-27 | 1981-11-18 | Motor-driven film transporting device in a single lens reflex camera including means for selectively driving film in a wind-up mode and a rewind mode |
Country Status (2)
Country | Link |
---|---|
US (1) | US4401377A (en) |
JP (1) | JPS5790620A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4544251A (en) * | 1982-05-08 | 1985-10-01 | Asahi Kogaku Kogyo Kabushiki Kaisha | Compact camera |
US4967213A (en) * | 1988-02-11 | 1990-10-30 | Samsung Aerospace Industries, Ltd. | Film advancing and rewinding device for a camera |
US5594516A (en) * | 1993-10-14 | 1997-01-14 | Fuji Photo Optical Co., Ltd. | Photographic camera |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4176936A (en) * | 1976-12-24 | 1979-12-04 | Canon Kabushiki Kaisha | Motor drive unit for a camera |
US4351595A (en) * | 1980-07-03 | 1982-09-28 | Canon Kabushiki Kaisha | Motor drive camera |
-
1980
- 1980-11-27 JP JP55167258A patent/JPS5790620A/en active Pending
-
1981
- 1981-11-18 US US06/322,574 patent/US4401377A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4176936A (en) * | 1976-12-24 | 1979-12-04 | Canon Kabushiki Kaisha | Motor drive unit for a camera |
US4351595A (en) * | 1980-07-03 | 1982-09-28 | Canon Kabushiki Kaisha | Motor drive camera |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4544251A (en) * | 1982-05-08 | 1985-10-01 | Asahi Kogaku Kogyo Kabushiki Kaisha | Compact camera |
US4967213A (en) * | 1988-02-11 | 1990-10-30 | Samsung Aerospace Industries, Ltd. | Film advancing and rewinding device for a camera |
US5594516A (en) * | 1993-10-14 | 1997-01-14 | Fuji Photo Optical Co., Ltd. | Photographic camera |
Also Published As
Publication number | Publication date |
---|---|
JPS5790620A (en) | 1982-06-05 |
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